I've been on it 3 days so far for strep throat I've been on it before for strep throat I've never had any issues until now it seems that a little bit after I take it I have chills, shaking, rapid heart rate, feels hard to breathe, and crying. I talked to a pharmacist about it and he thinks the Strep is stressing my body out. Nothing comes of it and I'm able to usually calm down. What do you think is happening?